公开(公告)号：US20230242762A1

公开(公告)日：2023-08-03

申请号：US18014774

申请日：2021-06-22

Applicant: POLYPLASTICS CO., LTD.

Inventor： Hidekazu IDEI ,  Katsuhei OHNISHI

IPC: C08L81/02 ,  C08K3/04 ,  C08K7/14 ,  B29C45/00

CPC classification number: C08L81/02 ,  B29C45/0001 ,  B29C45/0005 ,  C08K3/041 ,  C08K7/14 ,  B29K2081/04

Abstract: Provided is a method of suppressing burrs that occur during injection-molding of a polyarylene sulfide resin composition, including: adding at least 0.01 to 5 parts by mass of a carbon nanostructure to 100 parts by mass of a polyarylene sulfide resin and melt-kneading at least the carbon nanostructure and the polyarylene sulfide resin.

公开(公告)号：US20240043620A1

公开(公告)日：2024-02-08

申请号：US18258664

申请日：2021-12-06

Applicant: Polyplastics Co., Ltd.

Inventor： Katsuhei OHNISHI

IPC: C08G75/0204 ,  C08K3/36 ,  G02B6/38

CPC classification number: C08G75/0204 ,  C08K3/36 ,  G02B6/38 ,  C08K2201/005 ,  C08K2201/014

Abstract: Provided are a polyarylene sulfide resin composition which yields a molded article with excellent toughness, as well as a molded article and an optical ferrule, which are produced using the polyarylene sulfide resin composition. In a polyarylene sulfide resin composition containing a polyarylene sulfide resin (A) and silica particles (B), a specific amount of a polyarylene sulfide resin (A) having a melt viscosity of 35 to 80 Pa·s, and a specific amount of silica particles (B) having a lower content of coarse powders with a particle size of 45 μm or more are employed.

公开(公告)号：US20170096557A1

公开(公告)日：2017-04-06

申请号：US15128015

申请日：2015-03-17

Applicant: Polyplastics Co., Ltd.

Inventor： Katsuhei OHNISHI ,  Tatsuya KANEZUKA ,  Sei WAKATSUKA

IPC: C08L81/02 ,  B32B27/28 ,  B29C47/02 ,  B29C45/14 ,  B29C45/00 ,  B29C47/00 ,  B32B15/08 ,  B32B27/20

CPC classification number: C08L81/02 ,  B29B9/06 ,  B29C45/0001 ,  B29C45/14 ,  B29C48/022 ,  B29C48/04 ,  B29C48/15 ,  B29C48/402 ,  B29K2081/04 ,  B29K2705/00 ,  B32B15/08 ,  B32B27/20 ,  B32B27/286 ,  B32B2250/02 ,  B32B2262/101 ,  B32B2264/104 ,  B32B2457/00 ,  B32B2605/00 ,  C08J5/043 ,  C08J2381/04 ,  C08J2423/08 ,  C08K2003/265 ,  C08L2201/08 ,  C08L2203/20 ,  C08L2205/06

Abstract: A polyarylene sulfide-derived resin composition which has flowability optimal for insert molding and which can impart superior high- and low-temperature impact properties to a molded body, and an insert-molded body using the resin composition. The resin composition includes a polyarylene sulfide resin having carboxylic terminal groups, an olefin-derived copolymer, glass fibers and calcium carbonate. The weight-average molecular weight of the polyarylene sulfide resin is 15,000-40,000; as copolymerization components, the olefin-derived copolymer includes α-olefins, glycidyl esters of α,β-unsaturated acids, and acrylic esters, and the content of the copolymerization component derived from the glycidyl esters in the resin composition is 0.2-0.6 mass %. Further, the fiber diameter of the glass fibers is 9-13 μm, the average particle diameter of the calcium carbonate is 10-50 μm, and the total content of glass fibers and the calcium carbonate is 45-55 mass % of the resin composition.